private Map promptForOverwrite(List plugins, List locales) {
    Map overwrites = new HashMap();

    if (overwriteWithoutAsking) return overwrites;

    for (Iterator iter = plugins.iterator(); iter.hasNext(); ) {
      IPluginModelBase plugin = (IPluginModelBase) iter.next();
      for (Iterator it = locales.iterator(); it.hasNext(); ) {
        Locale locale = (Locale) it.next();
        IProject project = getNLProject(plugin, locale);

        if (project.exists() && !overwrites.containsKey(project.getName())) {
          boolean overwrite =
              MessageDialog.openConfirm(
                  PDEPlugin.getActiveWorkbenchShell(),
                  PDEUIMessages.InternationalizeWizard_NLSFragmentGenerator_overwriteTitle,
                  NLS.bind(
                      PDEUIMessages.InternationalizeWizard_NLSFragmentGenerator_overwriteMessage,
                      pluginName(plugin, locale)));
          overwrites.put(project.getName(), overwrite ? OVERWRITE : null);
        }
      }
    }

    return overwrites;
  }
  /**
   * Creates an NL fragment project along with the locale specific properties files.
   *
   * @throws CoreException
   * @throws IOException
   * @throws InvocationTargetException
   * @throws InterruptedException
   */
  private void internationalizePlugins(List plugins, List locales, Map overwrites)
      throws CoreException, IOException, InvocationTargetException, InterruptedException {

    Set created = new HashSet();

    for (Iterator it = plugins.iterator(); it.hasNext(); ) {
      IPluginModelBase plugin = (IPluginModelBase) it.next();

      for (Iterator iter = locales.iterator(); iter.hasNext(); ) {
        Locale locale = (Locale) iter.next();

        IProject project = getNLProject(plugin, locale);
        if (created.contains(project)
            || overwriteWithoutAsking
            || !project.exists()
            || OVERWRITE == overwrites.get(project.getName())) {
          if (!created.contains(project) && project.exists()) {
            project.delete(true, getProgressMonitor());
          }

          if (!created.contains(project)) {
            createNLFragment(plugin, project, locale);
            created.add(project);
            project.getFolder(RESOURCE_FOLDER_PARENT).create(false, true, getProgressMonitor());
          }

          project
              .getFolder(RESOURCE_FOLDER_PARENT)
              .getFolder(locale.toString())
              .create(true, true, getProgressMonitor());
          createLocaleSpecificPropertiesFile(project, plugin, locale);
        }
      }
    }
  }